JPH0660205U - Rail mounting structure for electrical equipment housing - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] With a simple structure, the rail with the device mounting plate is safely and securely mounted inside the electrical equipment housing body. [Structure] The rail 5 is a cylindrical rail having a U-shaped cross-section with a bottom surface and both ends opened, and a bolt insertion hole 5a at the upper end.
And a mounting hole 5b for mounting the device mounting plate 6 on the surface and insertion holes 5c, 5c for axially supporting the rail reinforcing metal fitting 4 on the side plate. After the insertion groove 2a for inserting the lower end portion is provided, the upper end portion of the rail 5 can be vertically rotated while the rail 5 is inserted, and the bolt 8 is inserted into the bolt head insertion hole 3b of the rail mounting bracket 3. , Bolt head locking hole 3c
The bolt shaft portion 8 is locked to the upper end portion of the rail 5 and fixed by the nut 9, and the rail reinforcing metal fitting 4 is inserted into the insertion hole 4a.
And the insertion hole 5c of the side plate of the rail 5 are aligned with each other, the fixing pin is inserted, and the fixing member is fixed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement in a rail mounting structure in a box for housing electrical equipment.

[0002]

[Prior art]

 Conventionally, there are various types of rail mounting structures for electric equipment housing boxes, and the most common one is to just bolt both ends of the rail to the electric equipment housing body. However, when the vertical dimension of the electrical equipment storage box becomes longer than 1200 mm, the rail length also becomes longer, and the strength of the central part is insufficient if only the ends are fixed, and if some sort of impact is applied to the distribution board, the rail will be damaged. There was a possibility that internal electric equipment could be adversely affected, such as vibration of the machine, which could damage the handle of the breaker attached to the rail through the equipment mounting plate. Therefore, the rail mounting member at the middle portion of the rail is used for reinforcement, or the reinforcing frame body 20 shown in FIG. 4 is mounted inside the middle portion of the rail 21 and screwed to the rail 21.

In Japanese Utility Model Laid-Open No. 64-50611, a bolt insertion hole for bolting a frame to a box, a mounting piece on which both lower ends of the frame are mounted, and a mounting piece located outside the frame. An intermediate fixing plate consisting of a fixing piece and having a predetermined length in the longitudinal direction of the frame is bolted to the box through the insertion hole, and the fixing piece is provided on the fixing piece of this intermediate fixing plate to attach the equipment mounting plate. There has been disclosed a device which is screwed to the frame via the fixture.

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional rail mounting structure for the electrical equipment storage box, the vertical dimension of the electrical equipment storage box is long and the rail mounting metal fitting in the middle of the rail is used to reinforce the rail mounting bracket. This was not practical because the bolts of the equipment mounting plate sometimes overlapped with the bolts and nuts to be fixed, which constrains the mounting of the equipment mounting plate. Further, as shown in FIG. 4, the reinforcing frame body 20 mounted inside the middle portion of the rail 21 and screwed to the rail 21 is effective for preventing the rail 21 from falling, but the reinforcing frame body is Since 20 is not fixed to the electrical equipment storage box, reinforcement is insufficient and vibration easily occurs on the rail 21, and it is weak against external impacts and damages internal electrical equipment such as breakers and doors. There was an occasion.

In Japanese Utility Model Laid-Open No. 64-50611, an intermediate fixing plate having a predetermined length in the longitudinal direction of a frame is bolted to a box for housing electric equipment, and the intermediate fixing plate is fixed. Although the frame and the mounting plate are screwed together with a fixing tool and the intermediate fixing plate is provided in the middle of the frame, the frame is not directly fixed to the intermediate fixing plate bolted to the box for housing electrical equipment. , It is fixed via a fixture, and because the frame is placed on the placing piece of the intermediate fixing plate and is provided at a position away from the electrical equipment storage box, It had problems in terms of vibration, had a large number of parts, and had troubles such as the work of aligning the fixture with the frame and the device mounting plate and screwing them in, which was troublesome.

Further, in any case, when the equipment mounting plate is attached to the main body of the electrical equipment housing, the rail has to be directly fastened to the rail mounting metal fittings, resulting in poor workability and during work. It was very dangerous because it could lead to loss of balance and an accident. This possibility increased as the size of the box for storing electrical equipment increased, that is, the size of the equipment mounting plate increased.

[0007]

[Means for Solving the Problems]

 In view of the problems of the conventional rail mounting structure for housing electrical equipment, the present invention has a simple structure and securely and securely mounts the rail mounting the equipment mounting plate inside the housing body for storing electrical equipment. The purpose is to install rail mounting brackets, rail mounting brackets, at least one or more rail reinforcing brackets that are fixed at intermediate positions of the rails, and device mounting plates to the opposite rails. In the box for storing electrical equipment with a panel consisting of the following, the rail is a cylindrical rail with a U-shaped cross section with a bottom surface and openings at both ends, a bolt insertion hole at the upper end, and a device mounting plate on the surface. And a side plate having an insertion hole for axially supporting the rail reinforcing metal fitting, and the rail supporting metal fitting has an insertion groove for inserting the lower end portion of the rail. The upper end of the rail can be rotated vertically in the through state, and the rail mounting bracket has a projecting surface in the center, and the bolt surface insertion hole and the bolt head locking adjacent to it are in the projecting surface. Hole, and after inserting the bolt into the bolt head insertion hole, lock it in the bolt head locking hole, lock the bolt shaft part to the upper end of the rail, and fix it with a nut. Is a U-shaped cross section and is inserted from the bottom opening side of the rail, sandwiches the rail, has insertion holes near both ends, and the insertion hole is aligned with the insertion hole of the rail side plate. That is, the fixing pin was inserted through and the fixing pin was fixed.

Further, in the electric equipment housing box, a plurality of insertion holes for the rail reinforcing metal fittings are provided, the fixing pin is inserted at an appropriate position, and the length of the bolt shaft portion for fixing the upper end portion of the rail is appropriately set as described above. It is possible to change the mounting height of the panel by making it correspond to the position.

[0009]

[Action]

 The rails are firmly fixed to the rail mounting bracket that is fixed to the main body of the electrical equipment storage box by tightening and fixing the reinforcing plate with bolt nuts, and the rail is placed on top of this with screws. Vibration resistance and shock resistance are increased to prevent damage to internal electrical equipment and doors.

[0010]

【Example】

 A rail mounting structure in a box for housing an electric device according to the present invention will be described with reference to the drawings.

1 and 2, an electric device housing box 1 includes a rail supporting metal fitting 2, a rail mounting metal fitting 3, and at least one rail reinforcing metal fitting 4 fixed to an appropriate intermediate position of the rail. , And a panel 7 in which a device mounting plate 6 is mounted on the rails 5 and 5 facing each other. The rail 5 is a cylindrical rail having a U-shaped cross-section with the bottom surface and both ends open. The rail 5 has a bolt insertion hole 5a at the upper end, a mounting hole 5b for mounting the device mounting plate 6 on the surface, and a side plate. The rail reinforcing metal fitting 4 has insertion holes 5c, 5c for axially supporting the rail reinforcing metal fitting 4, the rail support metal fitting 2 has an insertion groove 2a for inserting the lower end portion of the rail 5, and the rail 5 is inserted with the rail 5 inserted. The upper end portion of the rail is vertically rotatable, and the rail mounting member 3 has a projecting surface 3a at the center thereof. The projecting surface has a bolt head insertion hole 3b and a bolt head engaging hole adjacent thereto. 3c, the bolt 8 is inserted into the bolt head insertion hole 3b, and then locked in the bolt head locking hole 3c, and the shaft portion 8a of the bolt 8 is locked to the upper end portion of the rail 5 and the nut The rail reinforcing metal fitting 4 has a U-shaped cross section and is attached to the rail 5. The rail 5 is inserted while being inserted from the surface opening, and the insertion holes 4a, 4a are provided in the vicinity of both ends, and the insertion holes 4a, 4a are aligned with the insertion holes 5c, 5c of the side plate of the rail 5. The fixing pin 10 is inserted in this state, and the fixing pin 10 is fixed by the fixing fitting 11.

Next, a modified embodiment of the present invention will be described.

In FIG. 3, insertion holes 4 a, 4 a, 4 a of the rail reinforcing metal fitting 4 are provided, the fixing pin 10 is inserted at an appropriate position, and the length of the shaft portion 8 a of the bolt 8 for fixing the upper end portion of the rail 5 is long. The mounting height of the panel 7 can be changed by making the height correspond to the appropriate position. Incidentally, the number of the insertion holes 4a is not limited to three as in this embodiment, and may be provided at any number within a range not departing from the gist of changing the mounting height of the panel 7. Further, the means for changing the length of the shaft portion 8a of the bolt 8 to an appropriate position may be such that the bolt 8 has a different shaft length, or the shaft portion 8a can be replaced by a separator or the like without replacing the bolt 8. May be installed to deal with the change, and there is no problem in changing within the range not departing from this gist.

[0014]

[Effect of device]

 As described above, the rail mounting structure of the box for storing electrical equipment according to the present invention includes a rail support metal fitting, a rail mounting metal fitting, and at least one rail reinforcing metal fitting that is fixed to an appropriate intermediate position of the rail. In a box for storing electrical equipment, which has a panel formed by mounting equipment mounting plates on opposed rails, the rail is a cylindrical rail with a U-shaped cross section with a bottom surface and openings at both ends. A hole, a mounting hole for mounting a device mounting plate on the surface, and an insertion hole for pivotally supporting the rail reinforcing metal fitting are provided on the side plates.The rail supporting metal fitting is inserted through the lower end portion of the rail. The rail mounting bracket has a groove so that the upper end of the rail can be vertically rotated in the inserted state. The rail mounting bracket has a projecting surface in the center, and the projecting surface has a bolt head insertion hole and a button adjacent to it. It has a bolt head locking hole, and after the bolt is inserted into the bolt head insertion hole, it is locked in the bolt head locking hole, and the bolt shaft is locked on the upper end of the rail. The rail reinforcing metal fitting has a U-shaped cross section and is fitted from the bottom opening side of the rail and clamps the rail. There are insertion holes near both ends, and the insertion hole and the rail side plate described above are inserted. By matching the insertion holes, it is possible to prevent internal electrical equipment such as breakers and doors from being damaged by vibration and external shock, and to temporarily attach the equipment mounting plate inside the box. Even if the device mounting plate is large, there is an effect that it can be mounted safely and securely.

In addition, by providing a plurality of insertion holes for the rail reinforcing metal fittings and inserting the fixing pin at an appropriate position, the length of the bolt shaft portion for fixing the upper end portion of the rail can be made to correspond to the appropriate position. The effect is that the mounting height of the panel can be easily changed.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a rail mounting structure of a box for housing an electric device according to the present invention.

FIG. 2 is an exploded perspective view of the rail reinforcing metal fitting of FIG.

FIG. 3 is a perspective view of a modified example of the rail reinforcing metal member.

FIG. 4 is an explanatory view of a conventional rail mounting structure of a box for housing electrical equipment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Box for electrical equipment storage, 2 ... Rail support metal fittings, 3 ... Rail mounting metal fittings, 4 ... Rail reinforcement metal fittings, 5 ... Rail, 6 ... Equipment mounting plate, 7・
..Panels, 8 ... bolts, 9 ... nuts, 10 ...
..Fixing pins 11 ... Fixing metal fittings.

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[Procedure amendment]

[Submission date] December 10, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Name of device

[Correction method] Change

[Correction content]

[Title of device] Rail mounting structure for electrical equipment storage box

Claims (2)

[Scope of utility model registration request] 1. An electric system comprising: a rail support metal fitting, a rail mounting metal fitting, a rail reinforcing metal fitting fixed to at least one rail at an appropriate intermediate position of the rail, and a panel formed by mounting a device mounting plate on an opposed rail. In the equipment storage box, the rail is a cylindrical rail with a U-shaped cross section with a bottom surface and openings at both ends, a bolt insertion hole at the upper end, a mounting hole for mounting the equipment mounting plate on the surface, and a side plate. Includes an insertion hole for axially supporting the rail reinforcing metal fitting, the rail supporting metal fitting includes an insertion groove for inserting the lower end portion of the rail, and in the inserted state, the rail upper end portion is vertically rotatable. The rail mounting member has a projecting surface in the center, and the projecting surface is provided with a bolt head insertion hole and a bolt head engaging hole adjacent to the bolt head insertion hole. After inserting the bolt into the bolt head insertion hole, the bolt is inserted. Head The rail reinforcing metal fittings have a U-shaped cross section and are fitted from the bottom opening side of the rail, while the bolt shaft is locked to the upper part of the rail and fixed with a nut. And an insertion hole near both ends, and the fixing pin is inserted and fixed in a state where the insertion hole and the insertion hole of the rail side plate are aligned with each other, and the fixing pin is fixed. Rail mounting structure for equipment storage boxes. 2. In the electric equipment housing box, a plurality of insertion holes for a rail reinforcing metal fitting are provided, a fixing pin is inserted at an appropriate position, and a length of a bolt shaft portion for fixing an upper end portion of the rail is appropriately set as described above. The rail mounting structure in the electrical equipment housing box according to claim 1, wherein the mounting height of the panel can be changed by corresponding to the position.